EP 4096058 A1 20221130 - WIRELESS CHARGING SYSTEM AND APPARATUS, AND TO-BE-CHARGED DEVICE
Title (en)
WIRELESS CHARGING SYSTEM AND APPARATUS, AND TO-BE-CHARGED DEVICE
Title (de)
DRAHTLOSES LADESYSTEM UND -GERÄT UND ZU LADENDE VORRICHTUNG
Title (fr)
SYSTÈME ET APPAREIL DE CHARGE SANS FIL, ET DISPOSITIF DESTINÉ À ÊTRE CHARGÉ
Publication
Application
Priority
CN 202110595767 A 20210529
Abstract (en)
Embodiments of this application provide a wireless charging system and apparatus, and a to-be-charged device, to improve power conversion efficiency of wireless charging. In the wireless charging system provided in this application, a wireless charging apparatus obtains, in a charging period, channel information of a transmission channel and a waveform parameter used to indicate a waveform of an electromagnetic wave signal; generates a target electromagnetic wave signal based on the channel information and the waveform parameter; and sends the target electromagnetic wave signal to a to-be-charged device through the transmission channel. The channel information includes signal attenuation and a transmission delay that are of an electromagnetic wave signal transmitted through the transmission channel. The to-be-charged device converts the received target electromagnetic wave signal into a direct current signal, and performs charging based on the direct current signal. The target electromagnetic wave signal determined by the wireless charging apparatus can adapt to channel transmission, thereby improving power conversion efficiency of wireless charging. In addition, the channel information and structure information of the to-be-charged device do not need to be learned in advance, thereby improving practicality of a wireless charging method.
IPC 8 full level
H02J 50/20 (2016.01); H02J 50/80 (2016.01)
CPC (source: CN EP KR US)
H02J 7/00036 (2020.01 - CN); H02J 7/02 (2013.01 - CN); H02J 50/005 (2020.01 - CN); H02J 50/20 (2016.02 - CN EP KR); H02J 50/80 (2016.02 - EP KR US); H04B 17/0085 (2013.01 - US); H04B 17/309 (2015.01 - US)
Citation (search report)
- [X] WO 2020210283 A1 20201015 - FUTUREWEI TECHNOLOGIES INC [US]
- [A] US 2021135510 A1 20210506 - LIN XIANQI [CN], et al
- [A] KR 20170033796 A 20170327 - ENERGOUS CORP [US]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4096058 A1 20221130; EP 4096058 B1 20231025; BR 102022005065 A2 20221213; CN 115411847 A 20221129; JP 2022183403 A 20221209; JP 7359893 B2 20231011; KR 20220161529 A 20221206; US 2022385116 A1 20221201
DOCDB simple family (application)
EP 22165483 A 20220330; BR 102022005065 A 20220318; CN 202110595767 A 20210529; JP 2022061811 A 20220401; KR 20220041205 A 20220401; US 202217706326 A 20220328